Matty,
Go for it!
I've been in ATC (Australia) for 24 years, and despite all it's frustrations (shift work, weird management decisions etc), still enjoy the job.
Will you ever become browned off? Certainly. But if you get stuck into it, the options are always there to go either overseas or bail out completely.
Interesting to see recent applicants for ATC in Brisbane included many kids of controllers who would "never" recommend the job to anyone!
LLZe